The following information is taken from the Dictionary of the Older Scottish Tongue, available online at http://www.dsl.ac.uk/index.html. This is a work in progress.
| Spelling | Number | Dates & headers |
|---|---|---|
| Armstrang | 3 | 1579 (convoy); 1587 (brother, cousin) |
| Armstrong | 2 | 1616-7 (burch, cum) |